190906253971 has 2 divisors, whose sum is σ = 190906253972. Its totient is φ = 190906253970.

The previous prime is 190906253947. The next prime is 190906254013. The reversal of 190906253971 is 179352609091.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (179352609091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190906253971 - 2⁵ = 190906253939 is a prime.

It is not a weakly prime, because it can be changed into another prime (190906253771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95453126985 + 95453126986.

It is an arithmetic number, because the mean of its divisors is an integer number (95453126986).

Almost surely, 2^190906253971 is an apocalyptic number.

190906253971 is a deficient number, since it is larger than the sum of its proper divisors (1).

190906253971 is an equidigital number, since it uses as much as digits as its factorization.

190906253971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 52.

The spelling of 190906253971 in words is "one hundred ninety billion, nine hundred six million, two hundred fifty-three thousand, nine hundred seventy-one".